X-Git-Url: http://git.joshuawise.com/firearm.git/blobdiff_plain/1e66d5d1256a0e765f54201160b659ab2574b7d9..1d97a0955e863b7dc7bbe4350bcef8c2047768d8:/Terminal.v

diff --git a/Terminal.v b/Terminal.v
new file mode 100644
index 0000000..9dc5a21
--- /dev/null
+++ b/Terminal.v
@@ -0,0 +1,33 @@
+module Terminal(
+	input clk,
+	
+	input cp_req,
+	input [31:0] cp_insn,
+	output reg cp_ack,
+	output reg cp_busy,
+	input cp_rnw,
+	output reg [31:0] cp_read = 0,
+	input [31:0] cp_write);
+	
+	/* Terminal pretends to be cp5. */
+	reg towrite = 0;
+	reg [7:0] data = 0;
+	
+	always @(*)
+	begin
+		towrite = 0;
+		data = 8'hxx;
+		cp_ack = 0;
+		cp_busy = 0;
+		if (cp_req && (cp_rnw == 0) && (cp_insn[27:24] == 4'b1110) && (cp_insn[19:16] == 4'b0000) && (cp_insn[11:8] == 4'h5))
+		begin
+			towrite = 1;
+			data = cp_write[7:0];
+			cp_ack = 1;
+		end
+	end
+	
+	always @(posedge clk)
+		if (towrite)
+			$c("{extern void term_output(unsigned char d); term_output(",data,");}");
+endmodule